Format specs

Canonical specifications for what AI Chat Archive produces when it exports a Claude.ai conversation. If you're writing an importer, a search indexer, an Obsidian plugin, or anything else that ingests the output, these pages are the contract.

The formats are versioned via the changelog — any breaking change ships there with a new version string.

Per-format specs

• Markdown format — what every .md export looks like, header by header. The portable, edit-friendly format.
• HTML format — self-contained .html exports with embedded CSS, preserved artifacts and widgets. The visual-fidelity format.
• ZIP bundle structure — the folder layout inside a batch-export ZIP (paid feature): one folder per conversation, attachments subfolder, _INDEX.md table of contents.

Reference implementation

• Console snippets — MIT-licensed JavaScript snippets you can paste into DevTools. The Markdown snippet is a working reference implementation of the spec above; the JSON snippet dumps the raw API response for custom post-processors.

Stability

The format spec is frozen at v0.2.0 and forward-compatible. Future additions append new fields or sections; existing fields keep their shape. If that ever changes, the changelog will say so explicitly.